#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    ui->tableWidget->insertRow(0);
    ui->tableWidget->insertRow(1);
    ui->tableWidget->insertRow(2);

    ui->tableWidget->insertColumn(0);
    ui->tableWidget->insertColumn(1);
    ui->tableWidget->insertColumn(2);

    ui->tableWidget->setHorizontalHeaderItem(0,new QTableWidgetItem("学号"));
    ui->tableWidget->setHorizontalHeaderItem(1,new QTableWidgetItem("姓名"));
    ui->tableWidget->setHorizontalHeaderItem(2,new QTableWidgetItem("年龄"));

    ui->tableWidget->setItem(0,0,new QTableWidgetItem("1001"));
    ui->tableWidget->setItem(0,1,new QTableWidgetItem("张三"));
    ui->tableWidget->setItem(0,2,new QTableWidgetItem("20"));

    ui->tableWidget->setItem(1,0,new QTableWidgetItem("1002"));
    ui->tableWidget->setItem(1,1,new QTableWidgetItem("李四"));
    ui->tableWidget->setItem(1,2,new QTableWidgetItem("19"));

    ui->tableWidget->setItem(2,0,new QTableWidgetItem("1003"));
    ui->tableWidget->setItem(2,1,new QTableWidgetItem("王五"));
    ui->tableWidget->setItem(2,2,new QTableWidgetItem("19"));
}

Widget::~Widget()
{
    delete ui;
}


void Widget::on_add_row_clicked()
{
    int count=ui->tableWidget->rowCount();

    ui->tableWidget->insertRow(count);//下标从0开始,行数刚好就是新增的行号
}

void Widget::on_add_col_clicked()
{
    int count=ui->tableWidget->columnCount();

    ui->tableWidget->insertColumn(count);

    const QString& st=ui->lineEdit->text();

    ui->tableWidget->setHorizontalHeaderItem(count,new QTableWidgetItem(st));
}

void Widget::on_del_row_clicked()
{
    int row=ui->tableWidget->currentRow();

    ui->tableWidget->removeRow(row);
}

void Widget::on_del_col_clicked()
{
    int col=ui->tableWidget->currentColumn();

    ui->tableWidget->removeColumn(col);
}
